Partulidae
| Partulidae | |
|---|---|
| |
| Partula radiolata | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| (unranked): | clade Heterobranchia
clade Euthyneura |
| Superfamily: | |
| Family: | Partulidae Pilsbry, 1900
|
| Genera | |
|
See text. | |
Partulidae is a family of air-breathing land snails, terrestrial gastropod mollusks in the superfamily Partuloidea. The family is endemic to Pacific islands.[1][2][3]
Genera
The Partulidae are divided into five genera: [3][4]
- Eua has four species, confined to Tonga and Samoa.
- Partula has about 100 species, distributed from New Guinea to the Society Islands.
- Samoana has about 23 species, distributed in Polynesia and the Mariana Islands.
- Palaopartula has three species, restricted to the Palau.
- Sphendone has a single species from the Palau.
This cladogram shows the phylogenic relationships of genera in the family Partulidae:[3][5]
| Partulidae | |
Anatomy
In this family, the number of haploid chromosomes lies between 26 and 30 (according to the values in this table).[6]
Significance
The Partulidae represent a significant species radiation and were important in the development of modern evolutionary studies through the work of Henry Crampton in the early 20th century and later by Bryan Clarke, James Murray and Michael Johnson.
Status
Most Partulidae species have declined since 1974 and a very large proportion are extinct. The main threat to their survival has been the introduction of the predatory snail Euglandina rosea.[3]
References
- ^ Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed at http://animaldiversity.org.
- ^ ITIS Standard Report Page: Partulidae
- ^ a b c d Gerlach, J. (2016) Icons of Evolution - Pacific island tree snails, family Partulidae. Phelsuma Press, Cambridge
- ^ Cowie, R.H. (1992). Evolution and Extinction of Partulidae, Endemic Pacific Island Land Snails. Philosophical Transactions: Biological Sciences, Vol. 335, No. 1274 (Feb. 29, 1992), pp. 167-191.
- ^ Lee T., Burch J. B., Coote T., Pearce-Kelly P., Hickman C., Meyer J.-Y. & Foighil D. O. (18 August 2009). "Moorean tree snail survival revisited: a multi-island genealogical perspective". BMC Evolutionary Biology 9: 204. doi:10.1186/1471-2148-9-204
- ^ Barker G. M.: Gastropods on Land: Phylogeny, Diversity and Adaptive Morphology. in Barker G. M. (ed.): The biology of terrestrial molluscs. CABI Publishing, Oxon, UK, 2001, ISBN 0-85199-318-4. 1-146, cited pages: 139 and 142.
External links
Partulidae evolution, diversity and conservation Partula Pages